Abstract: Exhaust gases in an internal combustion engine are circulated into a chamber containing liquid fuel, the exhaust gases bubbling through the fuel to heat and vaporize the fuel prior to passing the fuel for mixing with air at the entrance to the intake manifold.

Abstract: A fuel injection system for an internal combustion engine in which the intake air flow is measured and a corresponding electrical signal is generated which governs a pressure control unit so as to modify the fluid pressure acting on a fuel-metering slide-valve piston, displacing it against restoring forces. The axial displacement of the slide-valve piston changes the flow aperture in adjacent metering slits and thus governs the rate of fuel flow to the injection valves of the internal combustion engine and maintains a desired fuel-air ratio.

Abstract: In a fuel metering device for an externally ignited internal combustion engine with compression of the air-fuel mixture, which system comprises a suction tube for the intake of air in which an air-measuring device and a randomly adjustable throttle valve having a flap are arranged in sequence, and in which an essentially proportionate amount of fuel is metered into the amount of air flowing therethrough, and wherein the proportionality of the fuel amount is adjustable by means of controlling a bypass circumventing the air-measuring device in dependence on engine data, there is described an improvement which comprises a valve arranged in the bypass, the said valve being controllable by the pressure prevailing in the suction tube in the vicinity of the throttle valve, a pneumatically actuated valve means adapted for controlling the valve in the bypass, and conduit means connecting the pneumatically actuated valve means with the suction tube and having an orifice in the latter which orifice is located upstream o

Abstract: Electric heating means for fuel vaporization in internal combustion engines to improve the efficiency, performance and starting thereof, an optimum amount of electrical power being supplied to the heating means during operation of the engine. An important feature relates to the use of heating units mounted in an intake manifold preferably with there being one heating unit for each engine cylinder, mounted adjacent the intake valve. In an engine having fuel injection, a heating unit is mounted on the downstream side of each fuel injector. Another important feature relates to the provision of means controlled by ambient temperature sensing means for automatically adjusting the optimum amount of electrical power supplied to electric heating and vaporizing means.

Abstract: An exhaust gas-detoxicating system for an externally ignited internal combustion engine having at least one air intake suction tube wherein a fuel/air mixture is produced by metering into said tube fuel from a fuel metering device, and wherein the fuel air mixture, before its entry into a cylinder of the engine, can be deviated through a heated-up bypass of at least one suction tube by means of a flap valve being disposed in said suction tube and being controllable in dependence on characteristic engine data, is improved by providing, in combination, measuring means for detecting the amount of air flowing through the said suction tube and means for controlling the flap valve in dependence on the detected air amount.

Abstract: An internal combustion engine system, particularly as used for automotive vehicle propulsion, includes the engine with a muffler for reducing engine exhaust noise and fuelled by gas produced by a miniaturized gas reformer requiring heating and a supply of vaporized liquid hydrocarbon and oxygen-containing gas, the reformer usually being enclosed by a larger enclosure to form a space through which the engine exhaust is passed for supplying heat to the reformer, and having an exhaust heated heat-exchanger for its intake. By positioning the reformer inside of the engine's muffler so that the exhaust heat there is used to supply heat to the reformer, the need for the bulk-increasing larger enclosure is eliminated, and by arranging the intake heat-exchanger in the muffler so that the exhaust flow through the muffler is deflected both when entering and leaving the exchanger, a multi-deflected and therefore exhaust noise attenuation exhaust flow results.